Ice-cream freezer.



No. 727,504. 'PATENTBD MAY 5, 1903. E. WALKER. ICE CREAM FREEZER.APPLIOATIOR' FILED D30. 6, 1902.

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No. 727,504. PA'TENTED MAY 5, 1903.

,E. WALKER. ICE CREAM FREEZER.

APPLICATION FILED DBO. 6. 1902.

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E I I- Q 1 0 2 w Hdiigasses L J J by v I I v I No. 727,504. 4 PATENTE'EMAY ,5, 1903:

E. WALKER. ICE CREAM EEEEZEE. APPLICATION FIL'BD D30. 6, 1902. N0 MODEL.

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Unrrnn STATES Patented May 5, 1903.

* ATENT OFFICE.

lCE-CREAM FREEZER.

SPECIFICATION forming part of Letters Patent No. 727,504, dated May 5,1903.

Application filed December 6, 1902. Serial No. 134,182. (No modelJ Toall whom it may concern:

Be it knownthat I, EDWARD WALKER, a citizen of the United States,residing at Warren, in the county of Warren and State of Pennsylvania,have invented a new and useful Ice-Cream Freezer, of which the followingis a specification.

This invention has relation to ice-cream freezers adapted to freeze ormanufacture icecream expeditiously and on a relatively large scale andwhich are generally operated by power, though it will appear thattheimprovements-are not limited to any particular means of driving themachine.

It is the object of the invention to provide improvements in ice-creamfreezers whereby the freezing operation may be materially expedited, asaving effected both in time and in the substances employed, greatercase attained in attending to the working of the machine, the ends ofcleanliness and comfort enhanced, and other advantages secured that areof importance in the construction and operation of the machinesmentioned.

A further object of the invention is to provide an improved freezer inwhich a constant circulation of brine may be maintained in the tubsduring the operation of the machine and to so arrange the connections asto permit of the movement of the tub into and out of operative rotationwith the dasher-actuating mechanism without interfering with the pipesor rendering it necessary to disconnect the same before moving the tubs.

A further object of the invention is to provide an ice-cream freezerwith a duplicate tub-carrier or a plurality of carriers, so that whilethe cream contained in the can of one tub is being frozen another orother tubs and their equipments may be connected up ready for freezingor discharging, as the case may be.

The invention also consists of various improvements inice-creaIn-freezing means, as will appear from the following descriptionand from the drawings hereto appended and forming a part of thisspecification.

Of the said drawings, Figure l is a front elevation of an ice-creamfreezer constructed in accordance with the invention. Fig. 2 is an endelevation of the same. Fig. 3 is a plan View of the machine, theoperating mechanism being removed in order to more clearly illustratethe arrangement of the piping connections. Fig. 4 is a detailperspective View of one of the tub-supports detached. Fig. 5 is atransverse sectional elevation illustrating one of the tub-supportconnections with the frame.

In carrying out my invention I have contemplated using it in connectionwith a system of manufacturing ice-cream by the employment of brinedirect from a refrigerating machine or cooler without the use of ice inthe tubs. However, the invention may be used as well with salt and icein the tubs, as is commonly understood. For the most part thedescription hereinafter given will be directed to the first-mentionedsystem.

In the drawings, 1 designates the base of the machine.

2 is a standard or upright, one of the fume tions of which is to supportthe operative parts of the machine which effect the stirring andagitation of the cream during the freezing operation.

3 is the main driving-shaft, provided with fast and loose pulleys, asshown, or other suitable means, which may be driven from any known primeoperating means. The end of the shaft 3 opposite to that on which thepulleys are located is provided with a bevelgear 4, which engages thegears 5 and 6, connected with the shaft 7 and sleeve-shaft 8, to rotatethe dasher and can, respectively, in the usual well-known manner. Theseoperative means are supported in the top of the standard.

9 designates the tub, which rests on the outer part of the tub-carrier10, the latter consisting of an iron arm or frame working on aswing-joint on the base '1, as shown. The tub-carrier is provided on itsbottom with a wheel or roller 11, running on a track on the base-plateto facilitate the swinging of the carrier to and fro.

12 designates the brine supply and drainage pipe, connected at one endwith the tub at its lower part and having at the other end a swing-jointor swivel connection with the main supply-pipe 13, which may beconnected to a tank or other source of supply, and each tub-pipe is alsoconnected to a drain-pipe 14, leading back to the circulating tank orpump.

At the juncture of each tub-pipe with the supply and drain pipes isplaced a three-way cook 15, which may be turned to place the tub-pipesin communication with either the supply or drain pipe and to control theflow of brine from the cooler or ice-tank (not shown) to the tub. If thetub-pipe were made flexible and of sufficient length, its connections,it is obvious, might be made rigid.

At a point suitably near the top of the tub there is an outlet fromwhich the brine as the tub fills flows out through a spout 16, that isdirectly over the opening 17, leading into the hollow standard 2, thelatter forming a receiver, and the brine collected in said receiver mayflow through the drain-pipe 14 back into the cooler-tank to be rinsed,or if salt and ice is used in the freezing process it may be piped to asewer or other drainage. Thus in the first instance securing greateconomy and in the latter, as well as the former, avoiding wet floors.

When the machine is provided with two connected carriers, each bearing atub, while freezing is being carried on in the can of one tub the othertub and its equipments can be put in readiness, so that when the firstis fini'shed and its controlling-valve 15 turned to place the tub-pipein com munication with the drainage-pipe the valve in the supply-pipe ofthe other may be opened and the arms swung around so as to bring thelatter tub into position to have the means for operating the can anddasher connected therewith. This last-mentioned means may be of commonand well-known construction, as shown.

By this invention it will be seen that the tubs are continuouslyconnected with the brine-supply main no matter what the position of thetubs maybe, thereby'avoiding the connecting or disconnecting of hose orother brine-conveying devices. Again, as the carriers are easily swungabout from one position to another and as one can may be dished whilethe other is freezing the work can not only be done expeditiously, but aboy of relatively little strength can do the work, thus dispensing withthe labor of strong men now commonly employed in ice-cream-making establishments and the great expense consequent thereon and this, inaddition to the saving in time, by keeping the machine in constantoperation. Moreover, by avoiding wet floors and the constant circulationof the brine there is a great saving of time and also of expense incooling the same, since the brine pumped back into the cooler thoughhaving done its work in the tub will be at a relatively low temperature.

As hereinbefore explained, when the brine system is not used and ice andsalt are employed for freezing, as in the old and common way, myimproved machine may be operated with great advantages, and the receiverand brine pipes may be used to conduct and carry away the salt waterthat now commonly flows over the floor to the discomfort of the attendants and hindrance in their work, not to again speak of the great wasteof the freezing substance.

Having thus set forth the construction and mode of operation of theinvention, though without attempting to describe all the forms in whichit may be made or all manners in which it may be used, what is claimedis 1. The combination in an ice-cream freezer, of a frame,dasher-operating mechanism, and a plurality of independent swingingtub-carriers mounted on the frame at either side of said mechanism andadjustable so that one or other may occupy an operative position undersaid freezing mechanism.

2. The combination in an ice-cream freezer, of the frame,dasher-operating mechanism, a tub, a swinging tub-carrier movable tooperative and inoperative positions with respect to said mechanism, abrine-supply means, a pipe connecting the brine-supply and tub andmovable with said tub,and a brinerdischarge spout carried by andcommunicating with the upper portion of the tub.

3. An ice-cream freezer comprising in combination, a frame,dasher-operating mechanism, a tub, a swinging tub-carrier movable tooperative and inoperative positions with respect to said mechanism, abrine supply means, a pipe connecting the tub with the brine-supplymeans and movable with said tub, a brine-receiver arranged adjacent tothe dasher-operating mechanism, and a brine-discharge spout carried bythe tub and movable to a position over the brine-receiver when the tubis adjusted to operative position.

4. The combination in an ice-cream freezer,

of a frame,'a swinging tub-carrier, a brine-receiver, a discharge-spoutcarried by the tub and movable to a position over the brine-receiver,means connected with the latter for carrying away the brine, and meansfor supplying brine to the tub.

5. An ice-cream freezer comprising in its construction a frame, a dasheroperating mechanism, and a pair of independently-pivoted tub-carryingarms having their pivots disposed respectively on opposite sides of theflasher-operating mechanism and movable into and out of operativerelation with said dasher-operating mechanism.

6. An ice-cream freezer comprising in its construction a frame, adasheroperating mechanism, a plurality of tub-carrying arms,

each having a swing-joint connection with the frame, tubs on thecarrying-arms, a brinesupply means,a pipe connecting each tub with thebrine-supply and having a swing-joint connection with the latter, and abrine-receiver disposed adjacent to the dasher-operating mechanism, andadapted to receive the brine from the upper portion of the tubs.

7. An ice-cream freezer comprising in its construction a frame, adasheroperating mechanism, two connected tub-carryin g arms having aswing-joint connection with the frame, tubs on the carrying-arms, abrine-supply means, a pipe connecting each tub with the brine-supply andhaving a swin g-joint connection with the latter, and a valve in each ofthe said pipes.

8. The combination in an ice-cream freezer, of a hollow standard,dasher-operating mechanism supported thereby, a pair of pivotallymountedtub-carrying arms movable into and out of operable relation with saidmechanism, the tubs, brine supply and discharge pipes connected to thetubs and overflowspouts leading from the tubs and discharging into thehollow standard.

9. The combination in an ice-cream freezer, of a hollow stand ard, adasher-operatin g mechanism carried thereby, a pair of pivotallymountedtub-carrying arms movable into and out of operable relation with saidmechanism,

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

A EDWARD WALKER.

Witnesses:

FRED N. COOK, CLYDE W. JURY.

